Xtrans.c | 132 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
Xtrans.h | 8 +++
Xtransint.h | 5 --
Xtranssock.c | 53 ++++++++++++-----------
Xtransutil.c | 14 ------
configure.ac | 2
xtrans.m4 | 13 ++---
xtrans.pc.in | 2
8 files changed, 176 insertions(+), 53 deletions(-)
New commits:
commit a57a7f62242e1ea972b81414741729bf3dbae0a4
Author: Hans de Goede <hdego...@redhat.com>
Date: Mon Mar 31 12:37:43 2014 +0200
xtrans 1.3.4
Signed-off-by: Hans de Goede <hdego...@redhat.com>
diff --git a/configure.ac b/configure.ac
index 6898c6d..bb8a34c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -21,7 +21,7 @@
# Initialize Autoconf
AC_PREREQ([2.60])
-AC_INIT([xtrans], [1.3.3],
+AC_INIT([xtrans], [1.3.4],
[https://bugs.freedesktop.org/enter_bug.cgi?product=xorg], [xtrans])
AC_CONFIG_SRCDIR([Makefile.am])
commit 1cd9cbe9b404e6c3e73dc0239d11547a5e2c02c4
Author: Mark Kettenis <kette...@openbsd.org>
Date: Sat Mar 29 23:51:49 2014 +0100
Increase UNIX socket buffer size
Some systems provide a really small default buffer size for UNIX sockets.
Bump it up to 64k if necessary such that large transfers (such as
XGetImage() on a 8-megapixel image) don't take tens of seconds.
Signed-off-by: Hans de Goede <hdego...@redhat.com>
diff --git a/Xtranssock.c b/Xtranssock.c
index fdf1dd7..6cde146 100644
--- a/Xtranssock.c
+++ b/Xtranssock.c
@@ -445,6 +445,27 @@ TRANS(SocketOpen) (int i, int type)
}
#endif
+ /*
+ * Some systems provide a really small default buffer size for
+ * UNIX sockets. Bump it up a bit such that large transfers don't
+ * proceed at glacial speed.
+ */
+#ifdef SO_SNDBUF
+ if (Sockettrans2devtab[i].family == AF_UNIX)
+ {
+ SOCKLEN_T len = sizeof (int);
+ int val;
+
+ if (getsockopt (ciptr->fd, SOL_SOCKET, SO_SNDBUF,
+ (char *) &val, &len) == 0 && val < 64 * 1024)
+ {
+ val = 64 * 1024;
+ setsockopt (ciptr->fd, SOL_SOCKET, SO_SNDBUF,
+ (char *) &val, sizeof (int));
+ }
+ }
+#endif
+
return ciptr;
}
commit 68f60238c4224f954ff6556ae778c72e420175f0
Author: Thomas Klausner <w...@netbsd.org>
Date: Wed Mar 26 13:21:49 2014 +0100
Add missing headers for free() and strlen().
Reviewed-by: Mark Kettenis <kette...@openbsd.org>
Signed-off-by: Thomas Klausner <w...@netbsd.org>
diff --git a/Xtrans.c b/Xtrans.c
index 11f6161..ae8ffad 100644
--- a/Xtrans.c
+++ b/Xtrans.c
@@ -48,8 +48,9 @@ from The Open Group.
*/
#include <ctype.h>
-#ifdef HAVE_SYSTEMD_DAEMON
+#include <stdlib.h>
#include <string.h>
+#ifdef HAVE_SYSTEMD_DAEMON
#include <systemd/sd-daemon.h>
#endif
commit 34463baacb3cafc096e0e0859bc10d6868cb2299
Author: Thomas Klausner <w...@netbsd.org>
Date: Wed Mar 26 13:21:23 2014 +0100
Cast ctype(3) function arguments to unsigned char.
Fixes warnings on at least NetBSD.
Reviewed-by: Mark Kettenis <kette...@openbsd.org>
Signed-off-by: Thomas Klausner <w...@netbsd.org>
diff --git a/Xtrans.c b/Xtrans.c
index d9e32d0..11f6161 100644
--- a/Xtrans.c
+++ b/Xtrans.c
@@ -166,8 +166,8 @@ TRANS(SelectTransport) (const char *protocol)
protobuf[PROTOBUFSIZE-1] = '\0';
for (i = 0; i < PROTOBUFSIZE && protobuf[i] != '\0'; i++)
- if (isupper (protobuf[i]))
- protobuf[i] = tolower (protobuf[i]);
+ if (isupper ((unsigned char)protobuf[i]))
+ protobuf[i] = tolower ((unsigned char)protobuf[i]);
/* Look at all of the configured protocols */
commit f20a9bb2ea25408ce9f1166b3b6e48759960fe86
Author: Hans de Goede <hdego...@redhat.com>
Date: Mon Mar 3 08:42:45 2014 +0100
configure: Also add -D_DEFAULT_SOURCE to .pc cflags to shut up glibc
warnings
The latest glibc considers _BSD_SOURCE deprecated, leading to the following
warning being issued for pretty much every C-file in the xserver:
In file included from /usr/include/stdint.h:25:0,
from
/usr/lib/gcc/x86_64-redhat-linux/4.8.2/include/stdint.h:9,
from ../include/misc.h:81,
from miexpose.c:82:
/usr/include/features.h:145:3: warning: #warning "_BSD_SOURCE and
_SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" [-Wcpp]
# warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use
_DEFAULT_SOURCE"
^
I've discussed this with the glibc developers and the prefered way of fixing
this is by also defining _DEFAULT_SOURCE which is the new way of stating
_BSD_SOURCE / _SVID_SOURCE .
Signed-off-by: Hans de Goede <hdego...@redhat.com>
Reviewed-by: Mark Kettenis <kette...@openbsd.org>
Tested-by: Kristian Høgsberg <k...@bitplanet.net>
Reviewed-by: Kristian Høgsberg <k...@bitplanet.net>
diff --git a/xtrans.pc.in b/xtrans.pc.in
index 90d19b1..b8d135b 100644
--- a/xtrans.pc.in
+++ b/xtrans.pc.in
@@ -6,4 +6,4 @@ includedir=@includedir@
Name: XTrans
Description: Abstract network code for X
Version: @PACKAGE_VERSION@
-Cflags: -I${includedir} -D_BSD_SOURCE @fchown_define@ @sticky_bit_define@
+Cflags: -I${includedir} -D_DEFAULT_SOURCE -D_BSD_SOURCE @fchown_define@
@sticky_bit_define@
commit 3f0de269abe59353acbd7a5587d68ce0da91db67
Author: Hans de Goede <hdego...@redhat.com>
Date: Thu Jan 23 11:47:25 2014 +0100
xtrans 1.3.3
Signed-off-by: Hans de Goede <hdego...@redhat.com>
diff --git a/configure.ac b/configure.ac
index 998fb06..6898c6d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -21,7 +21,7 @@
# Initialize Autoconf
AC_PREREQ([2.60])
-AC_INIT([xtrans], [1.3.2],
+AC_INIT([xtrans], [1.3.3],
[https://bugs.freedesktop.org/enter_bug.cgi?product=xorg], [xtrans])
AC_CONFIG_SRCDIR([Makefile.am])
commit 8f3bbed42c308f9c90293f23b7eaceff006aa232
Author: Jon TURNEY <jon.tur...@dronecode.org.uk>
Date: Wed Jul 10 16:29:12 2013 +0100
Add TransIsListening()
libxtrans provides TransNoListen() to set the 'don't listen' flag for a
particular transport, but there is no interface to query the state of that
flag
This is a bit of a problem for the XWin server, as it wants to start some
helper
clients (for clipboard integration and integrated window management), so
needs
to know what transports the server is listening on to construct appropriate
display names for those clients.
Add TransIsListening() to discover if TransNoListen() has been called for a
particular protocol or not
HdG:
-Invert the final check so that TransIsListening returns True when
TRANS_NOLISTEN is not set, as one would expect of it.
-Make the protocol argument a const char * as similar functions do
-Fix "warning: too many arguments for format" warning
Signed-off-by: Jon TURNEY <jon.tur...@dronecode.org.uk>
Signed-off-by: Hans de Goede <hdego...@redhat.com>
diff --git a/Xtrans.c b/Xtrans.c
index 225f4c8..d9e32d0 100644
--- a/Xtrans.c
+++ b/Xtrans.c
@@ -802,6 +802,22 @@ TRANS(NoListen) (const char * protocol)
}
int
+TRANS(IsListening) (const char * protocol)
+{
+ Xtransport *trans;
+
+ if ((trans = TRANS(SelectTransport)(protocol)) == NULL)
+ {
+ prmsg (1,"TransIsListening: unable to find transport: %s\n",
+ protocol);
+
+ return 0;
+ }
+
+ return !(trans->flags & TRANS_NOLISTEN);
+}
+
+int
TRANS(ResetListener) (XtransConnInfo ciptr)
{
diff --git a/Xtrans.h b/Xtrans.h
index 1754720..5807b67 100644
--- a/Xtrans.h
+++ b/Xtrans.h
@@ -311,6 +311,10 @@ int TRANS(NoListen) (
const char* /* protocol*/
);
+int TRANS(IsListening) (
+ const char* /* protocol*/
+);
+
int TRANS(ResetListener)(
XtransConnInfo /* ciptr */
);
commit e1e6121a1638d43d9929589b4723da2b38cb6b44
Author: Łukasz Stelmach <l.stelm...@samsung.com>
Date: Mon Nov 25 11:11:54 2013 +0100
Enable systemd socket activation
Receive file descriptors of open sockets from systemd instead of
creating them.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
Cc: Kyungmin Park <kyungmin.p...@samsung.com>
Cc: MyungJoo Ham <myungjoo....@samsung.com>
Cc: Piort Bereza <p.ber...@samsung.com>
Cc: Karol Lewandowski <k.lewando...@samsung.com>
Cc: Lennart Poettering <lenn...@poettering.net>
Cc: Zbigniew Jędrzejewski-Szmek <zbys...@in.waw.pl>
Cc: Peter Hutterer <peter.hutte...@who-t.net>
Cc: walter harms <wha...@bfs.de>
Signed-off-by: Hans de Goede <hdego...@redhat.com>
Acked-by: Peter Hutterer <peter.hutte...@who-t.net>
diff --git a/Xtrans.c b/Xtrans.c
index e478422..225f4c8 100644
--- a/Xtrans.c
+++ b/Xtrans.c
@@ -48,6 +48,10 @@ from The Open Group.
*/
#include <ctype.h>
+#ifdef HAVE_SYSTEMD_DAEMON
+#include <string.h>
+#include <systemd/sd-daemon.h>
+#endif
/*
* The transport table contains a definition for every transport (protocol)
@@ -1051,6 +1055,79 @@ complete_network_count (void)
}
+static int
+receive_listening_fds(char* port, XtransConnInfo* temp_ciptrs, int* count_ret)
+
+{
+#ifdef HAVE_SYSTEMD_DAEMON
+ XtransConnInfo ciptr;
+ int i, systemd_listen_fds;
+
+ systemd_listen_fds = sd_listen_fds(1);
+ if (systemd_listen_fds < 0)
+ {
+ prmsg (1, "receive_listening_fds: sd_listen_fds error: %s\n",
+ strerror(-systemd_listen_fds));
+ return -1;
+ }
+
+ for (i = 0; i < systemd_listen_fds && *count_ret < NUMTRANS; i++)
+ {
+ struct sockaddr_storage a;
+ int ti;
+ const char* tn;
+ socklen_t al;
+
+ al = sizeof(a);
+ if (getsockname(i + SD_LISTEN_FDS_START, (struct sockaddr*)&a, &al) <
0) {
+ prmsg (1, "receive_listening_fds: getsockname error: %s\n",
+ strerror(errno));
+ return -1;
+ }
+
+ switch (a.ss_family)
+ {
+ case AF_UNIX:
+ ti = TRANS_SOCKET_UNIX_INDEX;
+ if (*((struct sockaddr_un*)&a)->sun_path == '\0' &&
+ al > sizeof(sa_family_t))
+ tn = "local";
+ else
+ tn = "unix";
+ break;
+ case AF_INET:
+ ti = TRANS_SOCKET_INET_INDEX;
+ tn = "inet";
+ break;
+#if defined(IPv6) && defined(AF_INET6)
+ case AF_INET6:
+ ti = TRANS_SOCKET_INET6_INDEX;
+ tn = "inet6";
+ break;
+#endif /* IPv6 */
+ default:
+ prmsg (1, "receive_listening_fds:"
+ "Got unknown socket address family\n");
+ return -1;
+ }
+
+ ciptr = TRANS(ReopenCOTSServer)(ti, i + SD_LISTEN_FDS_START, port);
+ if (!ciptr)
+ {
+ prmsg (1, "receive_listening_fds:"
+ "Got NULL while trying to reopen socket received from
systemd.\n");
+ return -1;
+ }
+
+ prmsg (5, "receive_listening_fds: received listener for %s, %d\n",
+ tn, ciptr->fd);
+ temp_ciptrs[(*count_ret)++] = ciptr;
+ TRANS(Received)(tn);
+ }
+#endif /* HAVE_SYSTEMD_DAEMON */
+ return 0;
+}
+
#ifdef XQUARTZ_EXPORTS_LAUNCHD_FD
extern int xquartz_launchd_fd;
#endif
@@ -1083,12 +1160,16 @@ TRANS(MakeAllCOTSServerListeners) (char *port, int
*partial, int *count_ret,
}
#endif
+ if (receive_listening_fds(port, temp_ciptrs, count_ret) < 0)
+ return -1;
+
for (i = 0; i < NUMTRANS; i++)
{
Xtransport *trans = Xtransports[i].transport;
unsigned int flags = 0;
- if (trans->flags&TRANS_ALIAS || trans->flags&TRANS_NOLISTEN)
+ if (trans->flags&TRANS_ALIAS || trans->flags&TRANS_NOLISTEN ||
+ trans->flags&TRANS_RECEIVED)
continue;
snprintf(buffer, sizeof(buffer), "%s/:%s",
commit b895d45e225dd3d1bf9d598774d3ae4f29fcbc25
Author: Łukasz Stelmach <l.stelm...@samsung.com>
Date: Thu Nov 28 12:57:21 2013 +0100
Define TRANS_RECEIVED flag for transports
The flag is to be used to mark transports related to sockets
received from systemd.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
Signed-off-by: Hans de Goede <hdego...@redhat.com>
Acked-by: Peter Hutterer <peter.hutte...@who-t.net>
diff --git a/Xtrans.c b/Xtrans.c
index 735d7b8..e478422 100644
--- a/Xtrans.c
+++ b/Xtrans.c
@@ -744,6 +744,34 @@ TRANS(CreateListener) (XtransConnInfo ciptr, char *port,
unsigned int flags)
}
int
+TRANS(Received) (const char * protocol)
+
+{
+ Xtransport *trans;
+ int i = 0, ret = 0;
+
+ prmsg (5, "Received(%s)\n", protocol);
+
+ if ((trans = TRANS(SelectTransport)(protocol)) == NULL)
+ {
+ prmsg (1,"Received: unable to find transport: %s\n",
+ protocol);
+
+ return -1;
+ }
+ if (trans->flags & TRANS_ALIAS) {
+ if (trans->nolisten)
+ while (trans->nolisten[i]) {
+ ret |= TRANS(Received)(trans->nolisten[i]);
+ i++;
+ }
+ }
+
+ trans->flags |= TRANS_RECEIVED;
+ return ret;
+}
+
+int
TRANS(NoListen) (const char * protocol)
{
diff --git a/Xtrans.h b/Xtrans.h
index 69accd7..1754720 100644
--- a/Xtrans.h
+++ b/Xtrans.h
@@ -303,6 +303,10 @@ int TRANS(CreateListener)(
unsigned int /* flags */
);
+int TRANS(Received) (
+ const char* /* protocol*/
+);
+
int TRANS(NoListen) (
const char* /* protocol*/
);
diff --git a/Xtransint.h b/Xtransint.h
index ec5a772..4c670b8 100644
--- a/Xtransint.h
+++ b/Xtransint.h
@@ -331,6 +331,7 @@ typedef struct _Xtransport_table {
#define TRANS_NOUNLINK (1<<4) /* Don't unlink transport endpoints */
#define TRANS_ABSTRACT (1<<5) /* Use abstract sockets if available */
#define TRANS_NOXAUTH (1<<6) /* Don't verify authentication (because it's
secure some other way at the OS layer) */
+#define TRANS_RECEIVED (1<<7) /* The fd for this has already been opened by
someone else. */
/* Flags to preserve when setting others */
#define TRANS_KEEPFLAGS (TRANS_NOUNLINK|TRANS_ABSTRACT)
commit 2c0a7840a28ae696e80e73157856d7a049fdf6c7
Author: Gaetan Nadon <mems...@videotron.ca>
Date: Sun Dec 15 19:49:59 2013 -0500
xtrans.m4: remove AC_TYPE_SIGNAL and Imake SIGNALRETURNSINT
Assume signal handlers return void, as C89 requires
Drops use of autoconf's obsolete AC_TYPE_SIGNAL and Imake's even more
obsolete SIGNALRETURNSINT.
None of the modules including xtrans.m4 uses RETSIGTYPE from autoconf.
Signed-off-by: Gaetan Nadon <mems...@videotron.ca>
diff --git a/Xtransutil.c b/Xtransutil.c
index a6928bb..63f0fc3 100644
--- a/Xtransutil.c
+++ b/Xtransutil.c
@@ -306,24 +306,12 @@ static jmp_buf env;
#ifdef SIGALRM
static volatile int nameserver_timedout = 0;
-static
-#ifdef RETSIGTYPE /* set by autoconf AC_TYPE_SIGNAL */
-RETSIGTYPE
-#else /* Imake */
-#ifdef SIGNALRETURNSINT
-int
-#else
-void
-#endif
-#endif
+static void
nameserver_lost(int sig _X_UNUSED)
{
nameserver_timedout = 1;
longjmp (env, -1);
/* NOTREACHED */
-#ifdef SIGNALRETURNSINT
- return -1; /* for picky compilers */
-#endif
}
#endif /* SIGALARM */
diff --git a/xtrans.m4 b/xtrans.m4
index f578b3f..fe128b4 100644
--- a/xtrans.m4
+++ b/xtrans.m4
@@ -100,7 +100,6 @@ AC_INCLUDES_DEFAULT
# that use Xtrans functions
AC_DEFUN([XTRANS_CONNECTION_FLAGS],[
AC_REQUIRE([AC_CANONICAL_HOST])
- AC_REQUIRE([AC_TYPE_SIGNAL])
[case $host_os in
mingw*) unixdef="no" ;;
*) unixdef="yes" ;;
commit 87547e43189301e3dd42feb9d7ff32a75d0e727f
Author: Gaetan Nadon <mems...@videotron.ca>
Date: Sun Dec 15 16:11:00 2013 -0500
xtrans.m4: replace deprecated AC_HAVE_LIBRARY with AC_CHECK_LIB
The #define HAVE_LIBWS2_32 is still done and the lib ws2_32 is
prepended to LIBS if found.
Signed-off-by: Gaetan Nadon <mems...@videotron.ca>
diff --git a/xtrans.m4 b/xtrans.m4
index 352e654..f578b3f 100644
--- a/xtrans.m4
+++ b/xtrans.m4
@@ -29,7 +29,7 @@ AC_DEFUN([XTRANS_TCP_FLAGS],[
AC_SEARCH_LIBS(socket, [socket])
AC_SEARCH_LIBS(gethostbyname, [nsl])
if test "$ac_cv_search_socket$ac_cv_search_gethostbyname" = "nono"; then
- AC_HAVE_LIBRARY([ws2_32])
+ AC_CHECK_LIB([ws2_32],[main])
fi
# Needs to come after above checks for libsocket & libnsl for SVR4 systems
commit 88433eb1abe887000d34315c2f55aa42fcddfdee
Author: Gaetan Nadon <mems...@videotron.ca>
Date: Sun Dec 15 15:36:48 2013 -0500
xtrans.m4: fix warning by replacing obsolete AC_HELP_STRING
with AS_HELP_STRING
Signed-off-by: Gaetan Nadon <mems...@videotron.ca>
diff --git a/xtrans.m4 b/xtrans.m4
index d84442e..352e654 100644
--- a/xtrans.m4
+++ b/xtrans.m4
@@ -34,7 +34,7 @@ AC_DEFUN([XTRANS_TCP_FLAGS],[
# Needs to come after above checks for libsocket & libnsl for SVR4 systems
AC_ARG_ENABLE(ipv6,
- AC_HELP_STRING([--enable-ipv6],[Enable IPv6 support]),
+ AS_HELP_STRING([--enable-ipv6],[Enable IPv6 support]),
[IPV6CONN=$enableval],
[AC_CHECK_FUNC(getaddrinfo,[IPV6CONN=yes],[IPV6CONN=no])])
AC_MSG_CHECKING([if IPv6 support should be built])
@@ -106,7 +106,7 @@ AC_DEFUN([XTRANS_CONNECTION_FLAGS],[
*) unixdef="yes" ;;
esac]
AC_ARG_ENABLE(unix-transport,
- AC_HELP_STRING([--enable-unix-transport],[Enable UNIX domain socket
transport]),
+ AS_HELP_STRING([--enable-unix-transport],[Enable UNIX domain socket
transport]),
[UNIXCONN=$enableval], [UNIXCONN=$unixdef])
AC_MSG_CHECKING([if Xtrans should support UNIX socket connections])
if test "$UNIXCONN" = "yes"; then
@@ -114,7 +114,7 @@ AC_DEFUN([XTRANS_CONNECTION_FLAGS],[
fi
AC_MSG_RESULT($UNIXCONN)
AC_ARG_ENABLE(tcp-transport,
- AC_HELP_STRING([--enable-tcp-transport],[Enable TCP socket transport]),
+ AS_HELP_STRING([--enable-tcp-transport],[Enable TCP socket transport]),
[TCPCONN=$enableval], [TCPCONN=yes])
AC_MSG_CHECKING([if Xtrans should support TCP socket connections])
AC_MSG_RESULT($TCPCONN)
@@ -127,7 +127,7 @@ AC_DEFUN([XTRANS_CONNECTION_FLAGS],[
*) localdef="no" ;;
esac]
AC_ARG_ENABLE(local-transport,
- AC_HELP_STRING([--enable-local-transport],[Enable os-specific local
transport]),
+ AS_HELP_STRING([--enable-local-transport],[Enable os-specific local
transport]),
[LOCALCONN=$enableval], [LOCALCONN=$localdef])
AC_MSG_CHECKING([if Xtrans should support os-specific local connections])
AC_MSG_RESULT($LOCALCONN)
@@ -145,7 +145,7 @@ AC_DEFUN([XTRANS_CONNECTION_FLAGS],[
AC_DEFUN([XTRANS_SECURE_RPC_FLAGS],
[AC_REQUIRE([XTRANS_TCP_FLAGS])
AC_ARG_ENABLE(secure-rpc,
- AC_HELP_STRING([--enable-secure-rpc],[Enable Secure RPC]),
+ AS_HELP_STRING([--enable-secure-rpc],[Enable Secure RPC]),
[SECURE_RPC=$enableval], [SECURE_RPC="try"])
if test "x$SECURE_RPC" = "xyes" -o "x$SECURE_RPC" = "xtry" ; then
commit 9487701904b71985549f60c9d8bc5df48682b55a
Author: Mark Kettenis <kette...@openbsd.org>
Date: Thu Nov 21 11:55:17 2013 +0100
Don't restrict FD passing to Linux & Solaris
Signed-off-by: Mark Kettenis <kette...@openbsd.org>
Reviewed-by: Alan Coopersmith <alan.coopersm...@oracle.com>
Signed-off-by: Alan Coopersmith <alan.coopersm...@oracle.com>
diff --git a/Xtransint.h b/Xtransint.h
index 1f32f0c..ec5a772 100644
--- a/Xtransint.h
+++ b/Xtransint.h
@@ -72,10 +72,6 @@ from The Open Group.
# define XTRANSDEBUG 1
#endif
-#if XTRANS_SEND_FDS && !(defined(linux) || defined(__sun))
-#error "FD passing support only on Linux & Solaris"
-#endif
-
#ifdef WIN32
# define _WILLWINSOCK_
#endif
commit 8b2c8aabe27bcaa4de6432b53c4a1296010ea823
Author: Mark Kettenis <kette...@openbsd.org>
Date: Mon Nov 11 23:18:01 2013 +0100
Fix alignment issues in FD passing code
A char array on the stack is not guaranteed to have more than byte
alignment. This means that casting it to a 'struct cmsghdr' and
accessing its members may result in unaligned access. This will
generate SIGBUS on strict alignment architectures like OpenBSD/sparc64.
The solution is to use a union to force proper alignment.
Signed-off-by: Mark Kettenis <kette...@openbsd.org>
Reviewed-by: Matthieu Herrb <matth...@herrb.eu>
diff --git a/Xtranssock.c b/Xtranssock.c
index 0370119..fdf1dd7 100644
--- a/Xtranssock.c
+++ b/Xtranssock.c
@@ -2197,9 +2197,9 @@ TRANS(SocketSendFdInvalid)(XtransConnInfo ciptr, int fd,
int do_close)
#define MAX_FDS 128
-struct fd_pass {
+union fd_pass {
struct cmsghdr cmsghdr;
- int fd[MAX_FDS];
+ char buf[CMSG_SPACE(MAX_FDS * sizeof(int))];
};
#endif /* XTRANS_SEND_FDS */
@@ -2225,13 +2225,13 @@ TRANS(SocketRead) (XtransConnInfo ciptr, char *buf, int
size)
.iov_base = buf,
.iov_len = size
};
- char cmsgbuf[CMSG_SPACE(sizeof(int) * MAX_FDS)];
+ union fd_pass cmsgbuf;
struct msghdr msg = {
.msg_name = NULL,
.msg_namelen = 0,
.msg_iov = &iov,
.msg_iovlen = 1,
- .msg_control = cmsgbuf,
+ .msg_control = cmsgbuf.buf,
.msg_controllen = CMSG_LEN(MAX_FDS * sizeof(int))
};
@@ -2266,13 +2266,13 @@ TRANS(SocketReadv) (XtransConnInfo ciptr, struct iovec
*buf, int size)
#if XTRANS_SEND_FDS
{
- char cmsgbuf[CMSG_SPACE(sizeof(int) * MAX_FDS)];
+ union fd_pass cmsgbuf;
struct msghdr msg = {
.msg_name = NULL,
.msg_namelen = 0,
.msg_iov = buf,
.msg_iovlen = size,
- .msg_control = cmsgbuf,
+ .msg_control = cmsgbuf.buf,
.msg_controllen = CMSG_LEN(MAX_FDS * sizeof(int))
};
@@ -2308,7 +2308,7 @@ TRANS(SocketWritev) (XtransConnInfo ciptr, struct iovec
*buf, int size)
#if XTRANS_SEND_FDS
if (ciptr->send_fds)
{
- char cmsgbuf[CMSG_SPACE(sizeof(int) * MAX_FDS)];
+ union fd_pass cmsgbuf;
int nfd = nFd(&ciptr->send_fds);
struct _XtransConnFd *cf = ciptr->send_fds;
struct msghdr msg = {
@@ -2316,7 +2316,7 @@ TRANS(SocketWritev) (XtransConnInfo ciptr, struct iovec
*buf, int size)
.msg_namelen = 0,
.msg_iov = buf,
.msg_iovlen = size,
- .msg_control = cmsgbuf,
+ .msg_control = cmsgbuf.buf,
.msg_controllen = CMSG_LEN(nfd * sizeof(int))
};
struct cmsghdr *hdr = CMSG_FIRSTHDR(&msg);
commit 81662d2018a35a161a5e9707563ee7f503f8d3e0
Author: Mark Kettenis <kette...@openbsd.org>
Date: Mon Nov 11 23:16:15 2013 +0100
Remove unused static inlines
Signed-off-by: Mark Kettenis <kette...@openbsd.org>
Reviewed-by: Matthieu Herrb <matth...@herrb.eu>
diff --git a/Xtranssock.c b/Xtranssock.c
index c9d1033..0370119 100644
--- a/Xtranssock.c
+++ b/Xtranssock.c
@@ -2202,22 +2202,6 @@ struct fd_pass {
int fd[MAX_FDS];
};
-static inline void init_msg_recv(struct msghdr *msg, struct iovec *iov, int
niov, struct fd_pass *pass, int nfd) {
- msg->msg_name = NULL;
- msg->msg_namelen = 0;
- msg->msg_iov = iov;
- msg->msg_iovlen = niov;
- msg->msg_control = pass;
- msg->msg_controllen = sizeof (struct cmsghdr) + nfd * sizeof (int);
-}
-
-static inline void init_msg_send(struct msghdr *msg, struct iovec *iov, int
niov, struct fd_pass *pass, int nfd) {
- init_msg_recv(msg, iov, niov, pass, nfd);
- pass->cmsghdr.cmsg_len = msg->msg_controllen;
- pass->cmsghdr.cmsg_level = SOL_SOCKET;
- pass->cmsghdr.cmsg_type = SCM_RIGHTS;
-}
-
#endif /* XTRANS_SEND_FDS */
static int
--
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